Quran 2:144

If it wasn't for the sake of keeping sequence, I would have not posted this verse. May Allah forgive out shortcomings and make us practice what we preach
Aѕѕαℓααмυ αℓαιкυм ωαяαнмαтυllαнι ωαвαяαкαтυнυ ツ
Allah admonished the Jews for this behavior and alerted them to the wrongs that they were perpetrating against themselves by ordering righteousness, yet refraining themselves from righteousness. We should state that Allah is not criticizing the People of the Book for ordering righteousness, because enjoining good is a part of righteousness and is an obligation for the scholars. However, the scholar is himself required to heed, and adhere to, what he invites others to. For instance, Prophet Shu`ayb said,

﴿وَمَآ أُرِيدُ أَنْ أُخَالِفَكُمْ إِلَى مَآ أَنْهَـكُمْ عَنْهُ إِنْ أُرِيدُ إِلاَّ الإِصْلَـحَ مَا اسْتَطَعْتُ وَمَا تَوْفِيقِى إِلاَّ بِاللَّهِ عَلَيْهِ تَوَكَّلْتُ وَإِلَيْهِ أُنِيبُ﴾
(I wish not, in contradiction to you, to do that which I forbid you. I only desire reform to the best of my power. And my guidance cannot come except from Allah, in Him I trust and unto Him I repent) (11:88).

Therefore, enjoining righteousness and performing righteousness are both required. Neither category is rendered not necessary by the practice of the other, according to the most correct view of the scholars among the Salaf (predecessors) and the Khalaf.

Imam Ahmad reported that Abu Wa'il said, "While I was riding behind Usamah, he was asked, `Why not advise `Uthman' He said, `Do you think that if I advise him I should allow you to hear it I advise him in secret, and I will not start something that I would hate to be the first to start. I will not say to a man, `You are the best man,' even if he was my leader, after what I heard from the Messenger of Allah .' They said, `What did he say' He said, `I heard him say,

(A man will be brought on the Day of Resurrection and thrown in the Fire. His intestines will fall out and he will continue circling pulling them behind him, just as the donkey goes around the pole. The people of the Fire will go to that man and ask him, `What happened to you Did you not used to command us to do righteous acts and forbid us from committing evil' He will say, `Yes. I used to enjoin righteousness, but refrained from performing righteousness, and I used to forbid you to perform from evil while I myself did it.').'''

This Hadith was also recorded by Al-Bukhari and Muslim. eAlso, Ibrahim An-Nakha`i said, "I hesitate in advising people because of three Ayat:

﴿أَتَأْمُرُونَ النَّاسَ بِالْبِرِّ وَتَنسَوْنَ أَنفُسَكُمْ﴾
(Enjoin you Al-Birr on the people and you forget (to practise it) yourselves).

﴿يأَيُّهَا الَّذِينَ ءَامَنُواْ لِمَ تَقُولُونَ مَا لاَ تَفْعَلُونَ - كَبُرَ مَقْتاً عِندَ اللَّهِ أَن تَقُولُواْ مَا لاَ تَفْعَلُونَ ﴾
(O you who believe! Why do you say that which you do not do Most hateful it is to Allah that you say that which you do not do) (61:2-3).''

And Allah informed us that the Prophet Shu`ayb said,

﴿وَمَآ أُرِيدُ أَنْ أُخَالِفَكُمْ إِلَى مَآ أَنْهَـكُمْ عَنْهُ إِنْ أُرِيدُ إِلاَّ الإِصْلَـحَ مَا اسْتَطَعْتُ وَمَا تَوْفِيقِى إِلاَّ بِاللَّهِ عَلَيْهِ تَوَكَّلْتُ وَإِلَيْهِ أُنِيبُ﴾
(I wish not, in contradiction to you, to do that which I forbid you. I only desire reform to the best of my power. And my guidance cannot come except from Allah, in Him I trust and unto Him I repent) (11:88).